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"Radi-CAL" is a blanket term used to describe AP Racing's patented asymmetrical brake caliper design. Radi-CAL technology is grounded in Computer Aided Design (CAD) and Finite Element Analysis (FEA), and allows for organic, alien-looking designs that are a radical departure from conventional caliper designs of the past. Radi-CAL's are widely considered the pinnacle of current brake caliper technology. Since their inception in 2007, these revolutionary calipers have amassed a lengthy string of race victories at all levels of professional motorsport, while redefining brake performance expectations. For more details on the design concept and what these calipers have achieved in professional racing.
The key benefits of the Radi-CAL design:
- Massive Stiffness Increase- A 30+ % increase in both static and dynamic stiffness vs. conventional calipers allows for far less deflection under load, which means superior pedal feel & modulation, more even pad wear, and longer caliper service life.
- Considerable Mass Reduction- Removing all extraneous caliper mass lowers the caliper weight, despite the huge stiffness increases.
- Optimized Airflow- Air moves around and through the caliper more efficiently, providing superior heat evacuation and cooling.
- Efficient Packaging- The asymmetric caliper profile and internal fluid porting allows the caliper to fit into tighter spaces.
Over the years, many different strategies have been employed to shrink the brake caliper footprint while maintaining adequate stiffness: More robust caliper bridge designs, two-piece calipers with steel through-bolts, exotic materials (i.e. Beryllium, MMC), forging rather than casting, monobloc design, etc. All of these innovations pushed calipers towards becoming lighter, smaller, and stiffer. However, until the advent of the Radi-CAL, the same basic rectangular, boxy shape remained the accepted standard.
Features:
- Eliminates the need to remove the caliper for pad changes
- Retains OEM parking brake functionality
- Saves 18 unsprung lbs.vs. OEM iron brakes and weighs almost the same as the OEM PCCB system
- Jewel-like ENP caliper finish is incredibly durable and easy to clean
- AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs
- Allows for the preservation of pricey OEM brake components
- Huge array of brake pad options from all major pad manufacturers
- Fits OEM 20" wheels without spacer
- 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels
- Every component designed to resist the heat of extended track sessions
- Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
- Includes pad tension kit (eliminates noise) an disc burnishing at no additional cost
- Designed to work with our Essex/AP Racing front BBKs ( CP9669 or CP9661)
Fitment:
- Porsche Cayman 718 GT4 RS 2017+
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Make Vehicle | Model | Year |
---|---|---|
2017-2025 Porsche 718 Cayman |
718 Cayman | 2017-2025 |
AP Racing has been part of the automotive industry for more than 50 years. It started back in 1920 by Edward Boughton, Willie Emmott, and Denis Brock. They planned to import parts from the US to help maintain ex-military vehicles that were adapted for civilian use after Worl War 1. They later expanded their business by supplying parts for the British Motor Company.
Throughout the years, AP Racing has provided quality parts and specialized in clutches and brakes systems. Today, AP Racing has become one of the most recognized brands and has been well received by a lot of tuners, racers, and enthusiasts all around the globe.
AP Racing has participated in Motorsport racing and has helped produced race winners. As early as the 1930s they have already supplied parts for race cars in the British GP and have continued its tradition. In fact, it is being used by some of the best racing legends such as Jim Clark in his Lotus.
Continuous InnovationAP Racing has always pushed itself in improving its products to create the best performing product in the market. It has helped jumpstart the development of brakes and clutch technology. The industry has come a long way from the time when brakes were made out of iron to the carbon ceramic composites of today alongside clutches capable of handling over 1000 horsepower.
Purchase AP Racing Products at Vivid RacingWhen it comes to performance brakes and clutches, there are only a few brands that professionals trust and AP Racing is among the top of the list. With products that range from street applications to race-oriented brake and clutch systems, AP has it all. Visit Vivid Racing and check out the list of AP Racing products that would fit your specific needs.
By purchasing this product and opening this box, purchasers expressly acknowledge that AP Racing R does not make or cause to make any representation or promise to purchasers which relate to the brake systems parts or equipment that becomes part of the basis of the bargain between AP Racing R and purchasers. Purchasers expressly affirm that they are relying upon their own skill and judgment in selecting and purchasing these goods as suitable for purchasers' intended use.
Purchasers understand and agree that no officer, director, salesman, distributor, or agent of AP Racing R has any authority to make any statement contrary to the terms of this disclaimer and agreement. On the contrary, AP Racing R disavows any statement contrary to what is written above.
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